.app-banner{
    width: 100%;
    height: 560px;
    background: #444546 url(../image/app-banner-bg.png) no-repeat center 0;
    position: relative;
}
.app-banner-container{
    width: 1100px;
    height: 560px;
    margin:auto;
    position: relative;
}
.app-banner-left{
    width: 560px;
    height: 560px;
    background: url(../image/app.png) no-repeat ;
    background-size: 100%;
    position: absolute;
    z-index: 1;
    left: 25%;
    top: 0;
}

.app-button-box{
    width: 849px;
    height: 338px;
    border: 1px solid #e9e9e9;
    border-radius: 10px;
    margin: 30px auto;
    word-spacing: 0;
    overflow: hidden;
}
.app-button-box a{
    display: block;
    float: left;
    text-align: center;
    width: 283px;
    height: 169px;
    border: 1px solid #e9e9e9;
    border-left: none;
    border-top: none;
    margin-right: -1px;
    margin-bottom: -1px;
    color: #999;
    position: relative;
}
.app-button-box a i{
    display: inline-block;
    background-image: url(../image/app-icons.png);
    margin-top: 40px;
}
.app-button-box .btn-1 i{
    width: 53px;
    height: 63px;
    background-position: -1px -9px;
}
.app-button-box .btn-2 i{
    width: 74px;
    height: 63px;
    background-position: -272px -8px;
}
.app-button-box .btn-3 i{
    width: 65px;
    height: 63px;
    background-position: -201px -9px;
}
.app-button-box .btn-4 i{
    width: 60px;
    height: 63px;
    background-position: -63px -9px;
}
.app-button-box .btn-5 i{
    width: 66px;
    height: 63px;
    background-position: -130px -9px;
}
.app-button-box .btn-6 i{
    width: 54px;
    height: 63px;
    background-position: -352px -9px;
}
.app-button-box a em{
    display: block;
    text-align: center;
    margin-top: 10px;
    font-size: 20px;
}
.app-button-box a .intro{
    display: block;
    position: absolute;
    z-index: 4;
    width: 282px;
    left: 1px;
    top: 1px;
    height: 168px;
    opacity: 0;
    filter: alpha(opacity=0);
    color: #999;
    font-size: 14px;
    background: #f7f7f7;
    transition: all 0.2s linear;
}
.app-button-box a:hover .intro{
    opacity: 1;
    filter: alpha(opacity=1);
}
.app-button-box a .intro span{
    display: table-cell;
    height: 118px;
    padding: 25px 30px;
    vertical-align: middle;
    text-align: left;
}
.app-button-box a .intro span b{
    display: block;
    background:url(../image/app-yh.png) no-repeat;
    height: 22px;
}
.app-button-box a .intro span .start{
    background-position: 0 0;
    margin-bottom: 15px;
}
.app-button-box a .intro span .end{
    background-position: right -22px;
    margin-top: 10px;
}